Tools/Castle.DynamicProxy2/Castle.DynamicProxy/Generators/CacheKey.cs

   1 // Copyright 2004-2007 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.DynamicProxy.Generators
  16 {
  17         using System;
  18
  19         public class CacheKey
  20         {
  21                 private readonly Type targetType;
  22                 private readonly Type[] interfaces;
  23                 private readonly ProxyGenerationOptions options;
  24                 private readonly Type proxyForType;
  25
  26                 /// <summary>
  27                 /// Initializes a new instance of the <see cref="CacheKey"/> class.
  28                 /// </summary>
  29                 /// <param name="targetType">Type of the target.</param>
  30                 /// <param name="interfaces">The interfaces.</param>
  31                 /// <param name="options">The options.</param>
  32                 public CacheKey(Type targetType, Type[] interfaces, ProxyGenerationOptions options)
  33                 {
  34                         this.targetType = targetType;
  35                         this.interfaces = interfaces;
  36                         this.options = options;
  37                 }
  38
  39                 public CacheKey(Type proxyForType, Type targetType, Type[] interfaces, ProxyGenerationOptions options)
  40                         : this(targetType, interfaces, options)
  41                 {
  42                         this.proxyForType = proxyForType;
  43                 }
  44
  45                 public override int GetHashCode()
  46                 {
  47                         int result = targetType.GetHashCode();
  48                         if (interfaces != null)
  49                         {
  50                                 foreach(Type inter in interfaces)
  51                                 {
  52                                         result += 29 + inter.GetHashCode();
  53                                 }
  54                         }
  55                         result = 29 * result + options.GetHashCode();
  56                         if (proxyForType != null)
  57                                 result = 29*result + proxyForType.GetHashCode();
  58                         return result;
  59                 }
  60
  61                 public override bool Equals(object obj)
  62                 {
  63                         if (this == obj) return true;
  64                         CacheKey cacheKey = obj as CacheKey;
  65                         if (cacheKey == null) return false;
  66                         if (proxyForType != null && !Equals(proxyForType, cacheKey.proxyForType)) return false;
  67                         if (!Equals(targetType, cacheKey.targetType)) return false;
  68                         if (interfaces != null && cacheKey.interfaces == null) return false;
  69                         if (interfaces == null && cacheKey.interfaces != null) return false;
  70                         if (interfaces != null && interfaces.Length != cacheKey.interfaces.Length) return false;
  71                         if (interfaces != null)
  72                         {
  73                                 for(int i = 0; i < interfaces.Length; i++)
  74                                 {
  75                                         if (!Equals(interfaces[i], cacheKey.interfaces[i])) return false;
  76                                 }
  77                         }
  78                         if (!Equals(options, cacheKey.options)) return false;
  79                         return true;
  80                 }
  81         }
  82 }